What are the causes of oil seal leakage?
2 Answers
The causes of oil seal leakage are: 1. Natural aging of the oil seal, resulting in reduced sealing capability; 2. Excessive wear or deformation of the bearing; 3. Certain wear occurring during the use of the oil seal; 4. Improper installation of the oil seal; 5. Excessive use of lubricant near the oil seal or clogging of the vent hole; 6. The oil seal model used does not match the engine. The oil seal, also known as the shaft seal, is a component in machinery used to prevent fluid from leaking at joints. Sealing elements used for static and dynamic sealing are called seals. The representative form of an oil seal is the TC oil seal, which is a double-lip oil seal fully covered with rubber and equipped with a self-tightening spring. Generally, when referring to oil seals, it often means this type of TC skeleton oil seal.
I've seen quite a few friends' cars with oil seal leaks. The most common cause is aging oil seals. After prolonged use, the rubber material wears out and deteriorates, reducing sealing effectiveness and causing leaks. Another reason is improper installation, like when the mechanic didn't tighten it properly during the last maintenance, leading to oil seepage. Excessive oil pressure can also deform the seals, especially noticeable during high-speed driving. Using poor-quality or substandard engine oil can corrode sealing surfaces and accelerate leaks. Regularly inspect the undercarriage for oil stains or spots—if found, take it to a professional shop promptly. Don't wait until engine damage occurs to regret it; safety comes first. Routine maintenance is key, so choose quality oil and change it regularly.
